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Cover Page - shares
6 Months Ended
Jun. 30, 2021
Jul. 27, 2021
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2021  
Document Transition Report false  
Entity File Number 001-37936  
Entity Registrant Name SMART SAND, INC.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 45-2809926  
Entity Address, Address Line One 1725 Hughes Landing Blvd  
Entity Address, Address Line Two Suite 800  
Entity Address, City or Town The Woodlands  
Entity Address, State or Province TX  
Entity Address, Postal Zip Code 77380  
City Area Code 281  
Local Phone Number 231-2660  
Title of 12(b) Security Common Stock, par value $0.001 per share  
Trading Symbol SND  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period true  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   43,295,834
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2021  
Document Fiscal Period Focus Q2  
Amendment Flag false  
Entity Central Index Key 0001529628